Warburg Pincus has invested in ParetoHealth, according to a news release.

ParetoHealth, based in Philadelphia, is a health benefits captive. Founded in 2011, the company provides employer healthcare benefits solutions designed to enable small and midsized businesses to self-fund their health benefits.

Warburg Pincus, based in New York, is a global private equity firm focused on growth investing. Founded in 1966, the firm takes a long-term perspective and invests in businesses at all stages of development within healthcare and several other sectors.

Great Hill Partners, which previously invested in ParetoHealth, will retain an equal stake to Warburg Pincus. Based in Boston, Great Hill seeks to invest in middle market companies in several sectors, including healthcare technology.

Terms of the investment were not disclosed.